An artillery shell is ﬁred at an angle of 65.5 ◦ above the horizontal ground with an initialspeed of 1520 m/s. The accelerationof gravity is 9.8 m/s^2. Find the total time of ﬂight of the shell, neglecting air resistance. Answer in units of min

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The complete explanation is shown above. There are 4 major methods in solving quadratic equations. In this case, the factoring is the easiest (personally). The formula that I started with is given.Please let me know if you need any clarification. I'm always happy to answer your questions.